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5分钟了解 App Inventor 2：不会写代码，也能做出自己的 App - App应用开发...
...了，AI2 的能力远超想象：
1. 界面设计：拖拽组件搭建 UI，按钮、图片、列表、地图应有尽有
2. 传感器调用：GPS定位、加速度计、陀螺仪、相机、蓝牙——手机上的硬件都能用
3. 网络通信：HTTP请求、Firebase实时数据库、MQTT...
How to scroll to bottom in a ScrollView on activity startup
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After initializing your UI component and fill it with data. add those line to your on create method
Runnable runnable=new Runnable() {
@Override
public void run() {
scrollView.fullScroll(ScrollView.FOCUS_DOWN);
}...
Css height in percent not working [duplicate]
...e that it may not work as expected on mobile where 100vh doesn't take some UI elements of the browser into account. This is especially annoying when you put something at the bottom of 100vh tall element.
– konrad
May 23 '19 at 10:17
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How do I get Windows to go as fast as Linux for compiling C++?
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Could you elaborate a bit on #2? It's quite surprising -- is it because the kernel doesn't cache data on the RAM disk or something?
– user541686
Dec 22 '11 at 19:09
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Remove border from buttons
... you bind the "click" event with a custom handler.
Frameworks like Jquery-UI or Bootstrap does this out of the box. Using one of them may ease a lot the whole application conception by the way.
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
... version numbers are provided. Use this event to modify the database as required by the version change.
DatabaseOpened()
当数据库打开时，会触发此事件。
DatabaseUpgrade(oldVersion,newVersion)
This event fires when the database is upgraded. The previous and new version numbers a...
Infinity symbol with HTML
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∞
This does not require a HTML entity if you are using a modern encoding (such as UTF-8). And if you're not already, you probably should be.
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How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar
...ch results controllers: one for the normal display and another one for the UISearchBar's table view.
If you only use one FRC (NSFetchedResultsController) then the original UITableView (not the search table view that is active while searching) will possibly have callbacks called while you are search...
Build fat static library (device + simulator) using Xcode and SDK 4+
It appears that we can - theoretically - build a single static library that includes both simulator and iPhone and iPad.
10...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
... version numbers are provided. Use this event to modify the database as required by the version change.
DatabaseOpened()
当数据库打开时，会触发此事件。
DatabaseUpgrade(oldVersion,newVersion)
This event fires when the database is upgraded. The previous and new version numbers a...